// colddays.c -- finds percentage of days below freezing
#include <stdio.h>
int main(void) {
  const int FREEZING = 0;
  float temperature;
  int cold_days = 0;
  int all_days = 0;

  printf("Enter the list of daily low temperature.\n");
  printf("Use Celsius, and enter q to quit.\n");
  while (scanf("%f ", &temperature) == 1) {
    all_days++;
    if (temperature < FREEZING) cold_days++;
  }
  if (all_days != 0)
    printf("%d days total: %.1f%% were below freezing.\n", all_days,
           100.0 * (float)cold_days / all_days);
  if (all_days == 0) printf("No data entered!\n");

  return 0;
}
